Valve.



PATENTED AUG. 6, 1907.

B. V. OONSTANTINOVE VALVE. APPLICATION FILED OGT.22,190B.

INVENTOH 5022 5 7 Cwafanizza M I (E ATTORNEYS I 7 here shown a. tv plug 7, the latter her STATES PATENT ossron.

BORIS V. CONSTANTINOV, OF NEW YORK, N. Y.

VALVE.

He. seems.

Specification of Letters Patent.

Patented Aug. 6, 1907.

Application and October 22,1906. serial N 389,968.

range a pressurevuctuotel valve that it will open unii'orinly ilnougln-ut its r or an even and unintelthe vol re.

Other objects 02' the invention will appear in the general description.

I will describe 11. valve embodying my invention and then point out the novel features in the appended claims.

' Reference is to be had to iii '"uniierence, thus permitting rupted low 01' liquid around e accompanying dmwings,

forming a. partial this spec: dish, in which Slfllllzll.

characters of reference indicate corresponding parts inv all the figures.

Figure 1 is an end v ew of a. valve emhoclyin" my invention; Fig. 2 is :1 sec on the ine x-. of 1; Fig. 3 is an end View showing i. odificntion; Fig. 4 is a section on the line y-y 01' Fig. 3; and Fig. 5 shows the valve in plan Referring first to the example of my improvement shown in Figs. 1 and 2, l designates the valve erasing,

to which conducting pipes are to be attached in the usual manner, and. within the casing is on inclined p rtition 2, having an opening the wall of which forms s sent 3, for n disk valve 4. At the top the casing has on opening which is normally closed by a. screw cap 5, and through-this opening the valve may be inserted or removed. The valve stem 6 is movable in a guide, I uinr extension projecting from it ended into the wall oi the casing in ulincinent v. the seat 3. The vulve is held yicldingly against, its seat by means of a. coiled spring 8, surrounding the stem and extension and engaging at one end with the valve and at the other end with the valve casing. The stem 6 is longitudinally channeled, as indicuwdmt 9. was to prevent the posv A 4 o a sible iormmg of z'. :3, er cushion within the guide; in-

other words, when ile valve is forced open any water that may be within the guide will pass out through the ('hunneior channels 9 and therefore will offer no resistance to the opening 0! the valve.

In 1 3 end 4 the constmction differs from that just described in that the screw-cap 5 is dispensedwith and the plug ll corresponding to the plug 7 is made of sufficient diameter to admit the valve 4 to the using through the opening into which the plug is threaded when said plug is displaced; The bore of the tubular extension of the plug 11, as shown in Fig. 4, is extended through the outer end of the plugand is normally closed by a scre v 12.

In the operation, when the valve or cock at the outlet end of the pi pe is opened, the pressure of Water or the like on the lower side of the valve will force the 5211110 open, leaving a uniform space between the valve and its sea-t throughout the circumference of the valve, which is not the Case when the valve is hinged zit one side. W hen the outlet cockis closed, the water pressure will be equalized on both sides of the valve, .s) that the spring 8 will'inovo theyalve to closed position.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

In a valve casing, an lncllned partltion'having :in openlng forming a valve sent, a plug threaded into said casing- BORIS V. (.ONS'IFAN'IINOV. 

